774501121 has 2 divisors, whose sum is σ = 774501122. Its totient is φ = 774501120.

The previous prime is 774501107. The next prime is 774501127. The reversal of 774501121 is 121105477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744689521 + 29811600 = 27289^2 + 5460^2 .

It is a cyclic number.

It is not a de Polignac number, because 774501121 - 2¹⁵ = 774468353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 774501121.

It is not a weakly prime, because it can be changed into another prime (774501127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387250560 + 387250561.

It is an arithmetic number, because the mean of its divisors is an integer number (387250561).

Almost surely, 2^774501121 is an apocalyptic number.

It is an amenable number.

774501121 is a deficient number, since it is larger than the sum of its proper divisors (1).

774501121 is an equidigital number, since it uses as much as digits as its factorization.

774501121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 774501121 is about 27829.8602403965. The cubic root of 774501121 is about 918.3481389601.

Adding to 774501121 its reverse (121105477), we get a palindrome (895606598).

The spelling of 774501121 in words is "seven hundred seventy-four million, five hundred one thousand, one hundred twenty-one".